Treble loudspeakers, squawkers and subwoofers, as the names suggest, are used to produce high pitch, midrange and subwoofers respectively. A general speaker is usually a combination of a tweeter and a midrange speaker. Tweeters have low power, high operating frequency, small amplitude and relatively small size. When the requirements are not high, speakers of different uses can be used interchangeably based on similar parameters and specifications. For example, many speakers of about 3 inches can be used as midrange speakers. If there is no special subwoofer, midrange speakers can also be used as temporary substitutes.
Full-range speakers generally use a double paper cone structure with a small paper cone in the middle to enhance the treble. There is not much difference between small full-range speakers and ordinary speakers. Many full-range speakers are small speakers about 2 inches to 3 inches.
Coaxial speakers are similar to full-range speakers, but coaxial speakers are generally a combination of tweeters and mid-woofers. The two speakers are fixed on the same center line. Since their physical positioning is close to a point sound source, the sound field positioning of the reproduced sound is ideal. Different coaxial speakers have different physical structures.
Horn speakers are generally used for high pitch, and consist of a vibration system (tweeter) and a horn. The vibration system is similar to that of a paper cone speaker, but the difference is that its diaphragm is not a paper cone, but a dome-shaped diaphragm. The vibration of the diaphragm radiates sound waves into the air through the horn (after two reflections). It has a high frequency, a loud volume, and a high electroacoustic efficiency!
Resonance speakers use a flat plate instead of a paper cone to vibrate, fit it to the surface of an object, and use resonance to produce sound.
A dual voice coil speaker is a speaker composed of two independent voice coils. It usually has four wiring terminals. The dual terminal speakers will have a switch that allows series and parallel processing. For example, a 2-ohm dual voice coil car subwoofer speaker can be connected in series at 4 ohms and in parallel at 1 ohm. It can also be connected individually because the power amplifier system of car audio is generally less than 4 ohms, especially the subwoofer can be as low as 1 ohm. In addition, when multiple speakers need to be connected, the number of dual voice coil speakers can be reduced by half, which can reduce distortion caused by individual differences in speakers.
A dual-magnet speaker is a speaker that contains two magnets with the same magnetic field direction. It is generally understood to enhance the magnetic field performance, thereby improving the sensitivity and sound quality of the speaker, especially the low frequency. Some speakers use more than two magnets.